Even if they would make it, who would code for it, the critical apps that make or break a platform?
The way UWP was so badly managed, and how WinUI 3.0/WinAppSDK tooling fails short from the UWP development experience, no designer, super slow, endless amount of bugs, lacking feature parity, Native AOT and C++/WinRT quite behind .NET Native and C++/CX Visual Studio development experience,... means that only the Windows team themselves still care about it, as they keep updating Windows 11 UI to WinUI.
What abou the Windows development community themselves? Most of them don't care any longer, pivoted to Web, cross-platfrom frameworks, or good old Win32/.NET Forms/WPF.
Microsoft has quite a job in front of them to regain the trust of Windows development comunity, in what concerns targeting Windows first for new applications.